TABOO

 

(lat 43.1- 43.6 – lon 12.1 12.8)

TABOO is a scientific infrastructure composed of a dense seismic and geodetic network built by INGV to study the deformation processes active along a 40 km long normal fault.

The area selected as a natural laboratory is placed in the Northern Apennines where is detected the Alto Tiberina fault (ATF) that is potentially one of the rare examples of an active low angle (dipping at 15°) normal fault (LANF), worldwide.

This NNW-trending fault that accumulated 2 km of displacement over the past 2 Ma in a densely populated area, is located along a sector of the chain undergoing a NE-trending extension rate of 2-3 mm/yr.

The possibility that moderate-to-large earthquakes nucleate on LANFs (i.e., normal faults dipping less than 30°) accommodating extension of contin

ental crust is widely debated in the published literature.

The availability of high-resolution data, besides being a fundamental requirement to understand the physics of faulting, is a prerequisite to evaluate the seismic hazard associated to geologic structures.

Today, all the seismological and geodetic stations are integrated into the INGV National Networks real-time data acquisition system providing feasibility for continuous data archiving in standard formats and data dissemination for scientific purposes.

TABOO also results in a significant reduction in the threshold magnitude in earthquake detection for a large portion of the Northern Apennines, between the Marche, Umbria and Toscana regions.

 

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